because of how aluminum foil is manufactured.
During the final stage of rolling, extremely thin sheets of aluminum are often rolled together.
One side comes into contact with the highly polished rollers.
The other side comes into contact with the other sheet of aluminum.
That produces the familiar difference:
One side ends up very shiny.
The other side ends up more matte or dull.
So the foil isn’t manufactured with a special “food side” and a special “outside side.”
The appearance is largely a result of the manufacturing process.
Which
